Nut-lock



N0. 610,878. Patented Sept. I3, |898. W. T. PENDLEY C. C. FINCHER.

NUT LOCK.

\Applcation led Sept. 17, 1897.)

IVILLIAM T. PENDLEY AND @LEMON FINCHER, OF MILAN, GEORGIA.

SPECIFICATION forming part of Letters Patent No. 610,878, dated September 13, 1898.

Application filed September 17, 1897. Serial No. 652,082. (No model.)

To a/ZZ whom it may concern: Y

Be it known that we, WILLIAM T. PENDLEY and @LEMON C. FINOHER, residents of Milan,

in thecounty of Telfair and State of Georgia,l

have invented a new and useful Nut-Lock, of which the following is a specification.

This invention relates to improvements in nut-locks, and has for its object to provide a device of this character which will firmly secure the nuts against rotation upon the bolts, at the same time being provided with means whereby thel unlocking of the nut may be effected. t

Our improved nut-lock is exceedingly simple in construction as well as efficient in action, and the parts being interchangeable as between one bolt and another they may be manufactured and marketed as a separate article aside from the bolt, or bolts may be provided with the entire mechanism there-V with.

As illustrated in the drawings herewith, our improved nut-lock is shown in connection with railway construction; but it is apparent that it may be applied in any place where bolts are projected.

In the drawings herewith, forming a part of this specification, in which like parts are indicated by similar letters of reference, Figure l is a perspective view of a portion of a rail and fish-plate secured by abolt provided with our improved nut-lock. Fig. 2 is a vertical section of a rail and fish-plates through the bolt-apertures. showing the inner face of the nut. Fig. 4. is a perspective view showing the outer face of the washer. Fig. 5 is a similar view showing the inner face of the washer. Fig. 6 is a section on lines 6 6 of Fig. 4.

Referring to the drawings by letters, -A is a rail; B, the fish-plates; C, the bolt, which is of ordinary construction, and D the nut, having its inner face E ratcheted, as shown.

F is a washer, which is provided uponits inner face with a plurality of inwardly-proj ected pins at right angles therewith, said pins being adapted to enter corresponding apertures provided in the outer fish-plate or in the bearing-surface through which the bolt is projected. The outer face of said washer F is provided with a recess G, having an inclined Fig. 3 is a perpective view bottom, in which recess is confined a platea spring II, having one end projected through the washers and clenched upon its innerI face and its free end H bent outwardly at right angles with itself and beveled. The normal position of saidspring is that shown in Fig. 6.

Said springis also provided with a laterallyextended portion K, by which it may be depressed into the bottom of said recess G whenever desired. y n

Theparts having been constructed as above set forth, theoperation of our device is as follows: The bolt C is first passed through and the washer F is passed over its screw-threaded end, the pins F projecting into the apertures provided in the bearing-surface- The nut is then applied and rotated upon the screwthreaded end ofthe bolt until said bolt is sufficiently tightened. As soon as the ratchetteeth E of the nut engage with the end I-I' of `the spring I-I the latter will be depressed into the recess G until the inner surface of the nut rests upon the outer surface of the washer. In this position the spring II will not reach entirely to the bottom of the recess G, but have sufficient additional play therein so as to be pushed out of its engagement with said ratcheted surface E by means of its projected portion K, upon which the nutcan be backwardly rotated.

IVe thus provide asimple device by which not only a nut can be expeditiously locked vupon a bolt, but which with equal expedition may be unlocked and rotated off the bolt.

We are aware of numerous inventions in which the inner surface of the nut is ratcheted and made to engage with the edge of a spring adapted to prevent backward rotation, but we are not aware of any construction in which a washer provided with a spring is held rigidly upon a bearing-surface and adapted to lock a nut by contact therewith.V

I-Iaving thus described our invention, what we claim as new, and desire to secure by means of Letters Patent, is

In a nut-lock, the combination with the s'hplate, of a washer provided with a series of inwardly-projecting pins adapted to enter apertures formed in the bearing-surface of said fish-plate, saidwasher being provided on its outer surface with a recess having an inclined IOO bottom, a plate-spring secured in said recess it may be pushed out of engagement with the at its shallow end andhaving its free end bent nut, substantially as shown and described.

at right angles and projected outwardly and WILLIAM T. PENDLEY. beveled, a nut having an inner ratoheted face CLEMON C. FINCHER. 5 adapted to be engaged by the outwardly-pro- Witnesses:

jeoting end of said spring, and an outwardly- I-I. B. DICKENS, projeetinglug formed on said spring, whereby W. H. STUDSTILL. 

